Sofirn SC18/ Wurkkos WK03 small review + runtime + teardown (partially)

Thanks for joining the party, Luminance!

I frequently play a video game where my character is known as "The Luminary."

Thanks, it looks like something like 5A on turbo, maybe 1.5A on high and 600mA on medium. You need two thick and short wires connected to multimeter instead of the default thin probes for true current values.

Maybe this dropin isn’t so bad as it is press fitted and the light get hot when used.
ATR now works as stepdown in turbo mode.

I ordered wurkkos w03 to try. Just for fun, I like the UI.

Hi, raccoon city. Nice to now. I chose this name, aiming at the SI unit cd/mm2

yes, I have a stepdown at turbo to. Could you test if your light steps down on high, mine does not. As it can be seen in the graph

I just ordered it yesterday so it may take 2 weeks of even longer when I get my wk03)

The SC18 uses a 1 minute turbo timer + ATR at 43°C if you continuously reactivate turbo.

What’s the ambient temp for the test? I reviewed this and at 20°C it maxed out at 54°C at the head and 50°C on the body. This is perfectly fine, but for places that are warmer it could become an issue if one isn’t smart enough to manually reduce the level or hey sit it down somewhere. Although in use, would it actually heat up as hot as you saw, not likely since the air is moving around it and your hand conducts heat better than air sitting on your desk.

Your lumen measurements in comment #3 are very close to mine, some are exactly the same. My tube is calibrated with maukka lights, so you may not need to change anything.

Is the switch led controllable?

Not within the UI. You need Anduril UI

Great job on your first review. You answered all my questions.
Thanks for taking the time to make it! It is very helpful.

Thank you for the review!

Is it possible to remove the head? Is the body tube attached to the head by a threaded or press-fit connection?
I would like to modify the driver to have button standby light.
This has deterred me from buying so far, as well as the fact that the button seems to protrude too much. It is problematic to all the time lock out the button.

In the meantime I realized that the body and head are probably one piece and the shelf is holding the driver down.
It’s incorrigible, uncustomizable. :cry:

I would have to Retest my SC18, but if I’m remembering correctly — your numbers are close to what I measured

It happend that I didn’t get a notification about new replies, sorry. I received a new unit and can confirm, that it regulates the temperature to around 45˚C, although the pcb has the same date marked (22.05.17). Good to now, that my numbers seem accurate.

It seems the driver is not current regulated in turbo mode?

yes, it’s only an pwm fet driver. No current regulation in any mode

Not in any mode?
Too bad.
I was about to get one, i like the TIR fresnell optic.

viele danke

Thank you for putting this up Luminance. I really appreciate it! Good stuff!

Trying to help on how to take out the WK03/SC18 driver without special tool

There are 2 locking clamps on the side

Just push the locking clamps outward,we can use (-) screwdriver and the driver is ready to go

Hope this helps

1 Thank

Plug in a USB drive (FAT32 formatted only IIRC) and press the print button. :wink:

I know. Gonna do it that way next time